A user equipment (UE) may receive a quality of service (QoS) flow for a multicast or broadcast service that is secured with a multicast-broadcast key. The UE may transmit a data session establishment request to a service management function (SMF) for the multicast or broadcast service. The UE may receive at least one multicast-broadcast key for the PDU session. The UE may determine a radio bearer (RB) configuration for the multicast or broadcast service. The UE may receive one or more QoS flow packets for the multicast or broadcast service over the RB. The UE may decode the one or more QoS flow packets using the at least one multicast-broadcast key, or a key derived from the at least one multicast-broadcast key. Decoding may include decrypting, verifying the integrity, or a combination thereof.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The apparatus of claim 1, wherein the at least one processor is configured to decode encoded QoS flow packets from a packet data convergence protocol (PDCP) layer.
5. The apparatus of claim 1, wherein the data session includes one or more QoS flows, each QoS flow being associated with a unique multicast-broadcast key of the at least one multicast-broadcast key.
6. The apparatus of claim 1, wherein the data session establishment request includes an indication of a type of service or a domain name indicating a multicast or broadcast service.
7. The apparatus of claim 1, wherein the data session is a protocol data unit (PDU) session.
9. The apparatus of claim 8, wherein the at least one processor is configured to decode the one or more QoS flow packets at a packet data convergence protocol (PDCP) layer using the cell-specific multicast-broadcast key.
13. The apparatus of claim 12, wherein the at least one processor is configured to decode the one or more QoS flow packets at a packet data convergence protocol (PDCP) layer using the at least one multicast-broadcast key.
17. The method of claim 16, further comprising decoding encoded QoS flow packets from a packet data convergence protocol (PDCP) layer.
20. The method of claim 16, wherein the data session includes one or more QoS flows, each QoS flow being associated with a unique multicast-broadcast key of the at least one multicast-broadcast key.
21. The method of claim 16, wherein the data session establishment request includes an indication of a type of service or a domain name indicating a multicast or broadcast service.
22. The method of claim 16, wherein the data session is a protocol data unit (PDU) session.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
August 13, 2020
March 7, 2023
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